A118400 - cp's OEIS frontend

A118400 Triangle T, read by rows, where all columns of T are different and yet all columns of the matrix square T^2 (A118401) are equal; a signed version of triangle A087698.

n	a(n)
0	1
1	1
2	-1
3	1
4	0
5	1
6	-1
7	-1
8	-1
9	-1
10	1
11	2
12	2
13	2
14	1
15	-1
16	-3
17	-4
18	-4
19	-3
20	-1
21	1
22	4
23	7
24	8
25	7
26	4
27	1
28	-1
29	-5
30	-11
31	-15
32	-15
33	-11
34	-5
35	-1
36	1
37	6
38	16
39	26
40	30
41	26
42	16
43	6
44	1
45	-1
46	-7
47	-22
48	-42
49	-56
50	-56
51	-42
52	-22
53	-7
54	-1
55	1
56	8
57	29
58	64
59	98
60	112
61	98
62	64
63	29
64	8
65	1
66	-1
67	-9
68	-37
69	-93
70	-162
71	-210
72	-210
73	-162
74	-93
75	-37
76	-9
77	-1

[1, 1, -1, 1, 0, 1, -1, -1, -1, -1, 1, 2, 2, 2, 1, -1, -3, -4, -4, -3, -1, 1, 4, 7, 8, 7, 4, 1, -1, -5, -11, -15, -15, -11, -5, -1, 1, 6, 16, 26, 30, 26, 16, 6, 1, -1, -7, -22, -42, -56, -56, -42, -22, -7, -1, 1, 8, 29, 64, 98, 112, 98, 64, 29, 8, 1, -1, -9, -37, -93, -162, -210, -210, -162, -93, -37, -9, -1]

cp's OEIS Frontend

A118400 Triangle T, read by rows, where all columns of T are different and yet all columns of the matrix square T^2 (A118401) are equal; a signed version of triangle A087698.

Table of values

List of values